Radiator air valve



vMarch 30 1926.

J. MARTENS RADIATOR AIR VALVE Filed OCT.. 8. 1923 l Patented Mar. 3f), 192.6.

-UN'ITEDISTAT ss JOHN MARTENsoF CHICAGO, linmivois.

RADIATOR AIR VALVE.

Application filed octoberV s, i923. semi No. 667,137.'

To aZZ 'whom t may concern.'

Be it known that I,- JOHN MARTENS, a citizen of" the United States, residing' at Chicago, in the county .of Cook and State of Illinois, have invented a certain new andY use Improvement in` Radiatori Air Valves, of'which the 'following is a full, clear, concise,'and exact description, reference ,being had to the accompanying drawings, form-vV responsive to'vapor pressure,.I am enabled-V to reduce fuel `costs and *tov avoid the objectionable vemission of steam, .odors and water into the room. A fuel saving is edected by reason of the fact that the present air valve will close when the vapor reaches it4 after all the air is discharged, whereas in the devices as heretofore made a substantial steamv pressure is required ,to'seat the valve.

A further object isto provideV such aV radiator valve which will be of .the'greatest simplicity and cheapness of construction,

and which will be readily applicable to Vall standard radiators. f vReferring to the vaccompanying drawings illustrating the preferred Vform .of my in`` vention The device `is assembled upon a cupshaped fitting 5 which is formed with a lateral nip'ple 6 adapted to screw into the boss which is customarily provided `on the end of the radiator for receiving the valve. A tubular chamber 7 is screwedtdown into an internal thread formed in thetop of the cup-sliaped member 5. The upper end of the chamber 7 is converged inwardlyto provide the reduced tubular neck 8 continuing upwardly.. The upperend of this tubular' neck is threaded externally for receiving a tubular cap 9, screwing down over the neck 8. The upper end of this cap 9 is closed over withl the exception of a vent outlet 11 Thesingle `ligure is a vertical -sectional view of one of my improved radiator valves.

. in the center. These partsand connections yare commonly known. A sleeve is slipped PATENT oFricsf-- down inside of the reducedr neck Sjtoguide the ball check `valve .12. An inwardly A I extending bead 14j is preferably {provided' .at the juncture of the neck 8 and the chamber? for receiving the lower `edgeof-thev sleeve 18. lower edge O fthis sleeve 13 on thefbead 14 acts as a limiting stop.v for the downward screwing,of'the cap'9, and also serves `as a veryeffective'seal for preventing Ythe leakage ofsteam or vapor outiof the sleeve.V After the cap 9 has been screwed downto firmly 'seat vthe ends of the sleeve 18 the cap may be soldered around its lower edge to the reduced The pressure abutmentv ofv the neck 8 so as to preventft'ampering: with ,the

valve Vand to provide `a :hermetic seal around the edge-of the capL- A supportingrod 15 `having its lowerfend suitably anchored in the cup member 5, extends upwintojthe sleevey 13 for supporting the ball checkvalve 12 -in' approximately the position shown.l The ball Vcheck 12 has a certain'nicety of p roportioning vin lweight relative-to l,its size, and to the diameter of theisleeve .13 and the ksize ofthe ventoutlet11-f'l`his is tok the'end of insuring the closure of the valve Aafter thefvapor has forced .the air' from the. radiatorl and hasreached the radiator air valve due tovapo'r. Y v By virtue of they. ready removabilit'y of the cap 9, it will be apparent that ball check a valvesof different weights, and "off dfierlent the increasein thepressure ofthe sizes, can be substituted in vthe sleeve cage" 413-toy adaptv ythevdevice to fclo'sure ofthe `valve at a certain pressure. @..Also, different 1 caps 'can -beJsubstituted Vhaving ydiderent sized Vvent openings'll. For example, 'for/ a radiator havingy 50 square' lfeet, of raopening 11 of a certain size, `and for aradiator of square feetof radiating surface a diderent cap having a `different vent openfV 'ing would preferably be'substitut'ed so asto allow all the air to be vented lout of the radiator before the Vball valve seated.z t

In its preferred form, the ball check valve 19. is preferablyV made witha `diameter closely approaching that of the bore of the sleeve diating surface the cap' 9 would have a vent I .I 'i

13, so that the discharge of vapor or steam l in appreciable quantities from the radiator will tend to form a liquid seal between the Vcheck valve and the wall of the sleeve 13,

' whereby the ypocketing action of this liquid seal Vwill assist infraising the check valve to the vent opening ll. Y

Ijclaimi-f f 'f o Q 1. In a radiator air valve'ofthe'class described, the lcombination of a tubular chain- Y Vber adapted vfor connection withthe radiator7 a reduced neck at the upper endo-f Said chamber, an inwardly turned beadlforining an finternal Shoulder inthe lower'part of,

- said neck, athread on the outside of said neck,

ya cap internally threaded Ascrewing down Y over said neck, asleeve abutting the top of said, cap at its upper end and spaced 'troni the walls/thereof,` said sleeve extending `downwithin the bore of said neck andr seat`` ing at itslower edge on said internal ehoulder,a vent openinginthe top or" said. cap substantially concentrieallv of Vsaid sleeve, a ball check valve'contined withiny said Sleeve, and af rod extending upwardly 1- v`throughfsaid 'chainber and kinto Said neck Vfor supporting saidvalvein its l'lower posipose said vent opening considerably above fthe-lower. position -of :said ball valve, -said :ball 'Y valve beingfadaptedto seat onf Said Vent opening onl-yafterv the air has been ex?` ball" va-lve.-A

tion, said sleeve being relativelyV long to disliaustedcfromthe radiator andan etlective vapor'or steam pressure is impressed on Said y 2.1 In', Aa radiator air valve of the clase'devscribed, the combination ofa cup meinber, a

Y tubularv chamber fitted to Said cup rneinber,

saidtub'e *chamberr having afreduced neckV 'portion at' its upper end,'an inwardlyturned bead. forming an internal shoulder in .the

.- itsupper end and spacedzfroni the walls 'therey 'lower part of sajid neckA portion, a thread on fthe outside of said' neck portion, ajcap vin-A '4o.

ternally threaded screwing down over Said neck, afsleeve-abutting the top of Said cap at of,1`said'sleeve extending down within the bore vofsaid neck'and seating at its; lower edge on said internal, lShoulder, .a ventopening in the top'of sai-d capsubstantially concentrif' cally of .said sleeve,y a ball `checkvalve conned vwithin sleeve, and a supporting- `rod. secured tozsaid cup nieniberand'extending longitudinally through thercentral por# tion of said chamber and concentric with iohe saine plan Said neck. y

ft, In a radiator airvalve of the clasedelscribedfa chamber, a neck portion extending valve.

iny' naine this 5th the neck portionthereo'f', theupper lend or" Said supporting rodfserving aS afsjea't for *n said ball check valve.

3.V In a radiator'air valve ot the class deseribed,.the combination of ra' chamber, aV yneck portion extending from said' chamber,

said neckportien having an inwardly turned bead forming an internal shoulder atthe lower part thereof, a sleeve in said. neck portion and resting'on said internal shoulder, a

cap fitted over the Vupper end' oteaid neck Y portion, a vent'jopeningfin,the upper end ot from' said chamber, sai-d neckportion havinternal shoulder atrthe: lower part thereof,

Va sleeve in Said neck portion'resting on Said internal shoulder, a cap ,fitted over the top .ing an inwardly turned head orining an o'ffsaid neck portion, alvent inthe 'top of said cap, afball check valve confined within said sleeve, and nie-ans for supporting the said ballcheckvalve withinthefsleeve, said ball check valvev beingl adapted to :remain unseated while air is being vdischarged from Ythe saidvent andto close thersaid .vent when 'vapor reaches .thebalflvalvev Y f .Sopa

5; In radiatorlai'r valve of the*v class described, a chamber including a neck. por- ,tion,said neck portion having an. internal shoulder 'at' the lower part thereotga Sleeve in said neck portion resting on Saidinternal 'shouldeiga cap *tit/ted;v over thevtop ofs'aid neck portion, avent inthe top offsafid cap,

acheck valve conhnedfwithin said Sleeve, andrineans lfor Ysupporting said check valve @within the .f sleeve, said check valve being [adapted to remain unseated while air is" discharged roin the said vent andto close the 'said vent when'thevaporreaches the check 11n/:witness whereof, l Il hereunto' subscribe day of October, 1923. f 4 'J MARTENS. 

